131430424 has 32 divisors (see below), whose sum is σ = 252745920. Its totient is φ = 64043776.

The previous prime is 131430371. The next prime is 131430427. The reversal of 131430424 is 424034131.

It is a junction number, because it is equal to n+sod(n) for n = 131430395 and 131430404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131430427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109572 + ... + 110764.

It is an arithmetic number, because the mean of its divisors is an integer number (7898310).

Almost surely, 2^131430424 is an apocalyptic number.

It is an amenable number.

131430424 is a deficient number, since it is larger than the sum of its proper divisors (121315496).

131430424 is a wasteful number, since it uses less digits than its factorization.

131430424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 131430424 is about 11464.3108820373. The cubic root of 131430424 is about 508.4309381928.

Adding to 131430424 its reverse (424034131), we get a palindrome (555464555).

The spelling of 131430424 in words is "one hundred thirty-one million, four hundred thirty thousand, four hundred twenty-four".